12 ounce leather means that this belt is made to last with heavy duty material. Drum dyed means that the color is all the way through and will not scratch off. The buckle is removable and attached to a 1 inch strap. The belt overall measures 1.5 inches in width. For the best fit, please take your pant size and go up one (if you wear a size 34 or 35, order a 36 belt).